HP Designjet 4000 Service Manual - Page 160

Service Calibrations 6 Once the Line Sensor has been calibrated, the results will be displayed on the Front Panel. Press Enter to finish the calibration or press Back or Cancel to exit the calibration. 7 The Printer will now perform the Printhead Alignment. When the following message appears on the front panel, you must select whether you would like to continue with the calibration by pressing the Enter key. Press Back or Cancel to exit the calibration. Press Cancel or the Back key to Exit Press Enter to proceed 8 Once the Printhead Alignment is completed, the following message will be displayed on the Front Panel. Press the Enter key to continue. If the Printhead Alignment fails for any reason, a warning message will appear on the Front Panel. In this case, try the following: „ Enter the Front Panel menu and retry the Printhead Alignment. If the Alignment completes successfully, then perform the Color Calibration. „ If the Alignment fails again, check the Alignment pattern to see if any of the Printheads are printing incorrectly. If necessary, perform a Printhead Recovery through the Front Panel and retry the Printhead Alignment. 5-18 hp designjet 4000 series printer service manual